JP2019070674A - Electronic timepiece - Google Patents

Abstract

To provide a timepiece with a built-in antenna that can ensure satisfactory reception performance even when a metal case is used as an external housing.SOLUTION: A GPS-equipped wristwatch 1A comprises: a cylindrical case 111 formed of a conductive member; a movement 10 that has stepping motors 131 and 134 housed in the cylindrical case 111 to drive pointer shafts 320 and 620; a dial 2 formed of a non-conductive member; and a patch antenna 19 that is arranged within the cylindrical case 111 and on a rear side of the dial 2, receives radio waves transmitted from the outside and is composed of a dielectric and an electrode formed on that dielectric. The patch antenna 19 is arranged apart from more than a prescribed distance from an inner circumferential face of the cylindrical case 111, and the pointer shafts 320 and 620 are arranged between the inner circumferential face of the cylindrical case 111 and the outer circumferential face of the patch antenna 19.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an antenna built-in watch incorporating a patch antenna (microstrip antenna) for receiving radio waves transmitted from the outside.

Conventionally, a watch provided with an antenna for receiving radio waves has been developed. Here, radio waves include, for example, satellite signals transmitted from position information satellites.
As an antenna built-in type watch, for example, there is a watch having a patch antenna for receiving the satellite signal (see, for example, Patent Document 1).

  In Patent Document 1, the case of the wristwatch is configured of a bottomed cylindrical outer main body formed of a metal material. A bezel made of a material (such as a plastic material) that easily transmits radio waves is connected to the upper end side (opening side) of the external main body, and a cover glass is disposed inside the bezel. .

In such a wristwatch, a drive shaft of a pointer for displaying time is disposed at a plane center position of the dial. When the case is made of metal, the patch antenna in the case is preferably arranged as close as possible to the watch surface side, that is, the dial, in order to receive radio waves from the watch surface side.
Therefore, the patch antenna needs to be disposed between the drive shaft and the case inner circumferential surface. Therefore, the patch antenna of Patent Document 1 is disposed at a position shifted from the plane center of the case in the 12 o'clock direction of the dial.

By the way, since the patch antenna is a flat antenna, the thickness dimension can be reduced, and there is an advantage that the increase in the thickness dimension of the watch can be suppressed when the patch antenna is incorporated in the watch.
On the other hand, in order to secure necessary reception performance, it is necessary to secure the size of the patch antenna in the planar direction to a certain extent. In recent years, the patch antenna has been miniaturized to some extent by technological development such as dielectric material development and wireless device sensitivity improvement, but further miniaturization has been difficult in order to secure necessary reception performance. In addition, the flat size of the watch needs to be limited to the size that can be attached to the arm.
Therefore, when the patch antenna is disposed between the drive axis disposed at the center of the plane of the watch and the inner circumferential surface of the case, as shown in FIGS. 1 and 2 of Patent Document 1, the patch antenna is close to the case Be placed.

  The patch antenna is easily affected by the reception of radio waves when the case of a conductive member such as metal is close to the side surface of the antenna (the outer peripheral surface facing the inner peripheral surface of the case), and the reception performance is degraded. Therefore, in Patent Document 1, the reception performance is secured by extending the lower end edge of the bezel to near the lower surface position of the patch antenna and covering the side of the patch antenna with the bezel.

Japanese Patent Publication No. 2007-526985

  By the way, not only practical functionality such as clock display and communication but also high quality texture is required in watches, especially in watches. Therefore, in such a watch, a metal material is generally used for the exterior of the case.

However, in patent document 1, the area which a plastic-made bezel occupies becomes large, and there existed a problem that the texture of a timepiece falls.
On the other hand, when the metal case is adopted to enhance the texture, as described above, the patch antenna is disposed close to the metal case, which causes a problem that the reception characteristic is deteriorated. That is, since the patch antenna has single directivity, it is more suitable than a nondirectional antenna when receiving radio waves from the opening side of the metal case, that is, the cover glass and the dial side.
Even so, the patch antenna has the same operation principle as the slot antenna, and the gap between the top electrode end and the ground plate (the antenna end) emits the strongest radio waves, so metal is present in close proximity to the side of the patch antenna Then, the characteristics are greatly degraded. Therefore, there is a problem that the reception performance of the antenna is significantly reduced.

  An object of the present invention is to provide a watch with a built-in antenna capable of securing good reception performance even when a metal case is adopted for the exterior.

  In the watch with built-in antenna according to the present invention, a case formed of a conductive member, a dial formed of a nonconductive member, and a back side of the dial are arranged to receive light incident from the dial side. A solar panel that receives light to generate electric power, a date wheel disposed on the back side of the solar panel, and a date wheel formed of a nonconductive member, and disposed on the back side of the date wheel and away from the case A patch antenna for receiving the opening, and an opening is formed in the solar panel in a portion overlapping with the patch A date window is formed, and the date window is formed at a position where the entire window overlaps with the opening in plan view.

In the present invention, the patch antenna is disposed apart from the case. According to this, since the antenna is not close to the case, even when the conductive member (for example, a metal material) is adopted for the case, the influence of the conductive case can be reduced, and the deterioration of the reception performance can be prevented.
The plane of the watch (case) means a plane perpendicular to the thickness direction of the watch, and is usually a plane parallel to the dial surface.
Then, the dimension from the case to the outer peripheral surface of the antenna may be set to a dimension necessary to secure the reception performance required for the antenna incorporated in the watch, in consideration of the deterioration of the characteristics caused by approaching the case.

Further, even when the upper end position of the case is set to substantially the same height as the upper surface of the patch antenna, since the antenna is disposed apart from the case, the antenna is not only a radio wave incident from above. The radio wave incident from the left and right oblique directions can be received without being blocked by the case. Therefore, compared with the patent document 1, the proportion of the metal material in the appearance of the watch can be increased, and the texture of the watch can be improved while securing good reception performance of the antenna.
Further, in the present invention, since the solar panel is disposed on the back side of the dial, the timepiece can be driven by the power generated by the solar panel. Therefore, it is not necessary to replace the battery as in the case of using the primary battery, and the convenience of the user can be improved.
Also, since the substrate of the solar panel is thin but made of metal, high frequency radio waves such as GPS satellite signals are attenuated. Therefore, if the patch antenna is covered with a solar panel, the possibility of receiving radio waves increases.
On the other hand, in the present invention, since the opening is formed in the solar panel, radio waves can be incident on the patch antenna through the opening. Therefore, the patch antenna can receive radio waves that do not pass through the solar panel, and the attenuation of the received radio wave by the solar panel can be prevented and the reception performance can be improved.
Further, since the date indicator is formed of a nonconductive member and does not affect the reception at the patch antenna, it can be disposed at a position overlapping with the antenna in a planar manner.
In addition, since the date window provided for visualizing the date display of the date dial, ie, each number from 1 to 31 days, on the dial, is placed at a position overlapping the opening of the solar panel in a planar manner. There is no need to separately form an opening for making the date indicator visible on the panel, and the light receiving area can be increased as compared with the case where the opening is separately provided, and power generation performance can be improved.
That is, when the date indicator is disposed on the back side of the solar panel, it is necessary to form an opening in the solar panel so that the date display can be viewed through the date window.
On the other hand, in the present invention, since the date window is located at the opening of the solar panel, the date display of the date indicator can be viewed through the opening from the date window. Therefore, it is not necessary to separately form an opening for the sun wheel in the solar panel, and the light receiving area can be increased accordingly.

In the watch with built-in antenna according to the present invention, the watch includes a movement having a plurality of motors which are housed in the case and drive pointer shafts provided at a plurality of places, and the patch antenna is provided from the inner circumferential surface of the case It is preferable that the pointer shafts are disposed apart from each other by a dimension or more, and the pointer axes are disposed between the case and the patch antenna.
Here, the pointer axis is usually attached with a pointer for indicating hours, minutes, seconds and the like to perform time display, but may be other information such as a day, a day of the week, longitude or latitude.
Note that arranging the antenna at a predetermined distance or more from the inner circumferential surface of the case means that the minimum value of the distance between the outer circumferential surface of the antenna and the inner circumferential surface of the case is equal to or greater than the predetermined dimension. Therefore, if the antenna is arranged at the plane center position of the case, the distance can be set to the largest.
According to the present invention, when the antenna is spaced apart from the inner circumferential surface of the case by a predetermined dimension or more, the pointer shaft is disposed in the space between the antenna and the case, so the space can be effectively used, and the watch can be small. Can be implemented.
In addition, since the pointer shaft is a thin shaft-like member even if it is made of metal, its influence on the reception performance is small even if it is arranged close to the patch antenna. If the pointer shaft is a nonconductive member such as plastic, the influence on the reception performance of the patch antenna can be further reduced.

Further, it is preferable that the predetermined dimension is a dimension necessary for securing the reception performance, and that the pointer axis can be disposed.
Here, the dimension in which the pointer shaft can be disposed means a dimension in which a gear that meshes with the pointer shaft in at least the pointer shaft and a wheel train for driving the pointer shaft can be disposed between the antenna and the case.
In this case, since the minimum distance between the antenna and the case is a dimension capable of arranging the pointer shaft, the pointer shaft can be disposed at a free position around the antenna, and the freedom of the pointer layout of the watch can be improved. .
In the watch with built-in antenna according to the present invention, the area of the opening is preferably the same as the planar area of the patch antenna.
In the watch with built-in antenna according to the present invention, preferably, the solar panel comprises four solar cells.
In the antenna built-in type watch of the present invention, it has a pointer axis, the solar panel has a plurality of solar cells, and a through hole for the pointer axis is formed on a dividing line of the solar cells. preferable.

  In the watch with built-in antenna according to the present invention, at least two displays of a first display unit and a second display unit which are formed in a plane circle on the surface of the dial and in which the pointer shaft is arranged at a plane center position. A portion is formed, and a diameter of the first display portion is larger than a diameter of the second display portion, and the patch antenna is a line connecting a pointer axis of the first display portion and a pointer axis of the second display portion It is preferable to arrange | position in the position which overlaps in a plane.

According to such a configuration, since the first display unit has a diameter larger than that of the second display unit, it is possible to use a large pointer attached to the pointer shaft of the first display unit. For this reason, if the time of the current location is displayed on the first display unit, the current time of the current location can be easily confirmed, and convenience can be improved.
Also, since at least a second display unit is provided in addition to the first display unit, the time of another area set in advance is displayed to realize a dual time display function, or to indicate the reception sensitivity and the remaining battery capacity. A status display function can be realized, and convenience can be improved.
In addition, since the patch antenna is disposed at a position overlapping the line connecting the pointer axis of the first display unit and the pointer axis of the second display unit, the space between the pointer axes can be effectively used. Further, the pointer shaft of each display unit is disposed between the patch antenna and the case inner peripheral surface, and the dimension between the patch antenna and the case inner peripheral surface can be secured more than the radius of each display unit. Therefore, the patch antenna can be easily separated from the inner circumferential surface of the case by a predetermined dimension or more.

In the watch with built-in antenna according to the present invention, the dial has a shape in which the dimensions in the longitudinal direction and the lateral direction of the dial surface are different, and in addition to the first display portion and the second display portion on the dial surface. A third display portion formed in a planar circular shape and in which the pointer shaft is disposed at a planar center position, and the diameter of the third display portion is smaller than the diameter of the first display portion The patch antenna is disposed between the pointer axis of the second display portion and the pointer axis of the third display portion in the direction of the shorter dimension of the vertical direction and the horizontal direction of the dial plate, Preferably, in the vertical direction and the horizontal direction of the dial, in the direction in which the dimension is longer, it is arranged closer to the pointer shaft side of the second and third display portions than the pointer shaft of the first display portion.
Here, the dial according to the present invention has a flat oval shape, a flat rectangular shape, a shape combining a rectangle and a semicircle, or a shape combining a rectangle and a semi-elliptic (one obtained by dividing an ellipse into two by a major axis or a minor axis). Things can be used. Therefore, for example, in the case of a flat oval dial, the longer dimension is the major axis of the ellipse, and the shorter dimension is the minor axis of the ellipse.
Further, the vertical direction (vertical direction) of the dial surface means a direction connecting the 12 o'clock position and the 6 o'clock position on the dial, and the horizontal direction (horizontal direction) is a direction connecting the 3 o'clock position and the 9 o'clock position Means

According to such a configuration, since the patch antenna is disposed between the pointer axes, the antenna is disposed at a distance from the case more than the distance between the case and the pointer axes. The pointer shafts are often arranged at least by the length dimension of the pointers away from the case so that the pointers attached to the shafts do not abut the case.
Therefore, according to the present invention, the antenna can be disposed apart from the case by the length dimension of each pointer, and the layout of the pointer and the antenna can be easily set.
Further, based on the positional relationship between the patch antenna and the pointer axis, the planar center position of the first display unit and the planar center positions of the second display unit and the third display unit are arranged with the dimensions shifted in the long direction. The planar center positions of the second display unit and the third display unit are arranged to be offset in the direction in which the dimension is short.
Therefore, each display can be laid out on the dial in a well-balanced manner, and the design of the watch can be improved, and the layout of the pointer differs from that of a general analog watch in which the pointer axis is provided at the plane center of the dial. Can be configured.

  In the present invention, for example, if the patch antenna is disposed away from the case by a predetermined dimension or more and the pointer axes provided at a plurality of locations are disposed between the case and the patch antenna, for example, the plane center of the dial of the watch An antenna may be disposed in a portion, and a display of the same diameter may be disposed around the antenna. Also in this case, it is possible to configure a watch having a different pointer layout from that of a general analog watch in which a pointer axis is provided at the plane center of the dial. Furthermore, since a plurality of pointer axes can be arranged around the antenna, a timepiece capable of displaying other information in addition to time information can be easily realized.

  In the antenna built-in type timepiece of the present invention, clocking means for clocking the internal time, scheduled reception means for starting reception using the patch antenna when the internal time reaches a predetermined time, and driving of the motor A motor drive control means for controlling, the plurality of pointer axes display time based on the internal time, and a pointer whose position includes a position overlapping with the patch antenna in a plane in movement trajectory is attached The pointer shaft and a pointer shaft attached with a pointer whose position other than the time point is displayed and which includes a position overlapping with the patch antenna in a plane of movement, the regular reception means The scheduled reception is started at a time when the pointer for displaying the time does not overlap with the patch antenna in a planar manner, and the motor drive control means performs the scheduled reception While scheduled reception by stage is being performed, the guidance display information other than the time, it is preferable to move to a position not overlapping the patch antenna in plan view.

According to such a configuration, since the pointer for displaying the time does not overlap with the patch antenna in plan as the scheduled reception time, the pointer for displaying the time overlaps in planar with the antenna during scheduled reception There is no influence on the reception at the antenna even when using metallic guidelines.
In addition, since the pointer for displaying information other than time, for example, the reception signal level, etc. is also moved to a position not overlapping in plan with the patch antenna by the motor drive control means at regular reception, this pointer is used for reception at the antenna. It is also possible to prevent the influence.
Therefore, even when metal guides are used, the reception sensitivity can be prevented from decreasing because the guides do not overlap in plan view with the patch antenna at the time of reception.

It is also conceivable to move the hands for time display to a position not overlapping the patch antenna at the time of regular reception. In this case, reception can not be started until the pointer is moved, and the time can not be displayed during reception.
On the other hand, according to the present invention, since the pointer for displaying the time does not overlap with the antenna in plan while indicating the current time, there is no need to move the pointer for displaying the time, and the current time Reception processing can be performed quickly while displaying.

  In the watch with built-in antenna according to the present invention, preferably, the predetermined dimension is a dimension capable of disposing the motor.

The motor can be disposed at any position around the antenna by setting the predetermined dimension, that is, the minimum value of the distance between the outer circumferential surface of the patch antenna and the inner circumferential surface of the case, to a position where the motor can be disposed. The degree of freedom in the layout of motor-driven pointers can be improved.
Furthermore, since a plurality of motors serving as a drive source for driving the hands can be disposed between the inner circumferential surface of the case and the outer circumferential surface of the patch antenna, the antenna and the plurality of motors overlap in the thickness direction of the watch. There is no Therefore, the thickness dimension of the timepiece can be made smaller than that of the timepiece in which the patch antenna and the motor overlap in the thickness direction. In particular, since the antenna and the motor are parts having relatively large thickness dimensions among the parts of the watch, the thickness dimension of the watch can be greatly reduced if these parts can be arranged without overlapping in plan.

  In the watch with built-in antenna according to the present invention, it is preferable that the battery has a secondary battery to which power is supplied by the solar panel, and the patch antenna and the secondary battery are disposed at positions not overlapping in plan view .

  According to the present invention, since the antenna and the secondary battery do not overlap in plan view, the thickness dimension of the timepiece can be reduced as compared with the case where the antenna and the secondary battery are disposed overlapping in the thickness direction.

  In the watch with built-in antenna according to the present invention, preferably, the patch antenna receives a circularly polarized wave transmitted from a position information satellite.

Here, as circular polarization, for example, satellite signals transmitted from position information satellites such as GPS (Global Positioning System), Galileo (European satellite navigation system), SBAS: Satellite-Based Augmentation System can be exemplified.
Therefore, since the patch antenna of the present invention receives circularly polarized radio waves, it is possible, for example, to use a clock having a function to perform time correction using time information included in satellite signals, anywhere on the earth. The radio waves from the position information satellites can be received reliably, and accurate time can be always maintained.
In the watch with built-in antenna according to the present invention, preferably, the patch antenna is a flat antenna in which a ground plane and an antenna electrode are arranged in parallel.
In the watch with built-in antenna according to the present invention, the patch antenna preferably includes an antenna substrate, a dielectric stacked on the antenna substrate, and an antenna electrode formed on the dielectric.
In the watch with built-in antenna according to the present invention, the patch antenna is preferably an inverted F antenna.
In the watch with built-in antenna according to the present invention, preferably, the patch antenna is a chip antenna in which an inverted F antenna is configured on a ceramic dielectric.
In the watch with built-in antenna according to the present invention, preferably, the patch antenna is disposed on a circuit board which functions as a ground plate.
The patch antenna is a flat antenna, and is known to have a single directivity and a narrow directivity. However, the circuit board on which the patch antenna is mounted has the function of a ground plate, so it is external. Can be reflected on the circuit board and guided to the antenna. Therefore, the antenna can receive not only the radio wave directly incident on the antenna but also the radio wave reflected and indirectly incident on the circuit board. Therefore, the reception performance of the antenna can be further improved.

FIG. 1 is a schematic view showing a GPS wristwatch according to a first embodiment of the present invention. The top view of the said GPS wristwatch. The schematic sectional drawing of the said GPS wristwatch. The top view of the movement integrated in the said GPS wristwatch. (A) is a cross-sectional view showing a structure of a patch antenna, (B) is a characteristic diagram showing a radiation pattern of the patch antenna. The schematic diagram which shows the circuit structure of the said GPS wristwatch. The schematic sectional drawing which shows the GPS wristwatch which concerns on 2nd Embodiment of this invention. The disassembled perspective view which shows typically the principal part which concerns on the said 2nd Embodiment. The disassembled perspective view which shows typically the principal part which concerns on 3rd Embodiment of this invention. The top view which shows the GPS wristwatch which concerns on 4th Embodiment of this invention. The perspective view which shows the circuit board which concerns on the said 4th Embodiment. The schematic sectional view of the GPS wristwatch according to the fourth embodiment. The top view which shows the GPS wristwatch which concerns on 5th Embodiment of this invention. The top view which shows the GPS wristwatch which concerns on the said 5th Embodiment. The top view which shows the GPS wristwatch which concerns on 6th Embodiment of this invention. The top view which shows the GPS wristwatch which concerns on the modification of this invention. The rear view of the movement integrated in the GPS wristwatch which concerns on the said modification.

First Embodiment
Hereinafter, a first embodiment according to the present invention will be described based on the drawings.
FIG. 1 is a schematic view showing a GPS wristwatch 1A which is an antenna built-in type watch according to the present invention.
As shown in FIG. 1, the GPS wristwatch 1A receives satellite signals from a plurality of GPS satellites S orbiting the earth in a predetermined orbit, acquires satellite time information, and corrects internal time information. It is configured to be able to.
Here, the GPS satellites S are an example of position information satellites in the present invention, and a plurality of satellites S exist above the earth. Currently, about 30 GPS satellites S are orbiting.
In addition, the GPS wristwatch 1A is provided with an operation button 8 for external operation and a crown 9.

[Configuration of GPS watch]
FIG. 2 is a plan view of the GPS wristwatch 1A. FIG. 3 is a schematic cross-sectional view of the GPS wristwatch 1A. FIG. 4 is a plan view of the movement 10.
The GPS wristwatch 1A includes a dial 2 formed of a nonconductive synthetic resin material such as polycarbonate.
Further, the GPS wristwatch 1A is constituted by a scale, a pointer and the like formed on the dial 2, and the first time display unit 3, the second time display unit 4, the longitude display unit 5, the latitude display unit 6, and the date display unit It has seven.

The first time display unit 3 includes a circular scale display unit 31 provided at the 6 o'clock position of the dial 2 and a first hand 32. The scale display unit 31 has a scale divided into 60 along the outer peripheral edge.
The first hand 32 is formed of metal and is held by a triple pointer shaft 320 which is penetrated at the center of the first time display portion 3, and has a first second hand 321, a first minute hand 323 and a first hour hand 322. And have.
Each pointer shaft 320 to which the first second hand 321, the first minute hand 323, and the first hour hand 322 are attached is driven by a stepping motor 131 described later.

Similar to the first time display unit 3, the second time display unit 4 includes a circular scale display unit 41 provided at the 3 o'clock position of the dial 2 and a second hand 42. The scale display unit 41 has a scale divided into 60 along the outer peripheral edge.
The second hand 42 is formed of metal, is held by a double hand shaft 420 penetrated at the center of the second time display unit 4, and includes a second minute hand 421 and a second hour hand 422.
The pointer shafts 420 to which the second minute hand 421 and the second hour hand 422 are attached are also driven by a stepping motor 132 described later.

  In the configuration described above, the first time display unit 3 and the second time display unit 4 enable so-called dual time display in which the current time in different areas is displayed. For example, it is possible to display the time on the trip destination as the local time by the first time display unit 3 and to display the time of the home country as the home time by the second time display unit 4.

The longitude display unit 5 is provided with a circular scale display unit 51 provided at the 9 o'clock position of the dial 2 and a pointer 52 for longitude display. The scale display unit 51 includes a scale divided into 18 along the outer peripheral edge.
The pointer 52 is made of metal, is held by a pointer shaft 520 which is penetrated at the center of the longitude display unit 5, and is driven by a stepping motor 133 described later.
When the positioning information is not displayed on the longitude display unit 5, the battery remaining amount may be displayed by the pointer 52.

The latitude display unit 6 includes a circular scale display unit 61 provided at the 12 o'clock position of the dial 2 and a pointer 62 for latitude display. The scale display unit 61 includes a scale divided into 90 along the outer peripheral edge.
The pointer 62 is made of metal, is held by a pointer shaft 620 penetrated at the center of the latitude display 6, and is driven by a stepping motor 134 described later.
When the positioning information is not displayed on the latitude display unit 6, the day of the week may be displayed by the pointer 62. In this case, a scale indicating the day of the week may be displayed on the scale display unit 61.

  The date display unit 7 includes a date window 2A which is opened in a rectangular shape in the vicinity of the center of the dial 2, and a date dial 18 disposed on the back of the dial 2 to be described later. The date window 2A is formed at a position shifted from the center of the dial 2 in the direction of 4 to 5 o'clock, and is adjacent to the first time display unit 3 and the second time display unit 4. Then, the date dial 18 is driven by a stepping motor 135 described later, and the date printed on the date dial 18 (date display) is exposed and displayed from the date window 2A.

[Internal configuration of the GPS watch]
As shown in FIGS. 2 and 3, the GPS wristwatch 1 </ b> A includes a movement 10 for driving the hands 32, 42, 52, 62, and an outer case 11 for housing the movement 10.

The outer case 11 includes a cylindrical case 111 and a back cover 112 that closes one opening (the lower side in FIG. 3) of the cylindrical case 111.
The back cover 112 includes an annular metal first back cover 112A and a disk-like second back cover 112B made of glass and held by the first back cover 112A. The first back cover 112A is connected to the end face of the cylindrical case 111 by a screw structure.
Here, the cylindrical case 111 and the first back cover 112A are made of a conductive metal material such as SUS (stainless steel) or titanium alloy.

The movement 10 includes a circuit board 12, a drive mechanism 13, a secondary battery 14, a ground plate 17, and a patch antenna 19.
The circuit board 12 is mounted with respective circuit elements including a control unit (control module) 16 for controlling the drive mechanism 13 and a reception unit (GPS reception module) 20 for processing a signal received from the GPS satellite S. Specifically, as shown in FIG. 3, the receiving unit 20 is mounted on the lower surface side of the circuit board 12 (the surface on the opposite side to the patch antenna 19). Since a circuit pattern made of metal is formed on the circuit board 12, noise and the like radiated from a later-described crystal oscillation circuit 23 provided in the receiving unit 20 (see FIG. 6) can be blocked by the circuit board 12. . Therefore, compared to the case where the receiving unit 20 is mounted on the upper surface side of the circuit board 12, the influence of noise on the patch antenna 19 can be suppressed, and the receiving performance can be improved. Moreover, since the receiving part 20 is arrange | positioned to the dead space (space around the secondary battery 14) of the lower surface side of the circuit board 12, it can utilize space efficiently. Furthermore, since the receiver 20 is disposed at a position not overlapping the secondary battery 14 in a plane, the thickness dimension of the GPS wristwatch 1A can be reduced.

The drive mechanism 13 includes the stepping motors 131 to 135 described above and the wheel trains 136 and 137 for transmitting the driving force of the stepping motors 131 to 135 to the pointer shafts 320, 420, 520, and 620 and the date wheel 18. And a drive circuit 130 (see FIG. 6) for driving the stepping motors 131 to 135 in accordance with a control signal from the control unit 16. Therefore, the motor drive control means of the present invention is constituted by the drive circuit 130.
Further, the respective hands 32, 42, 52, 62 and the date dial 18 are driven by the drive mechanism 13, and display of various information such as time, longitude and latitude is performed.

  The secondary battery 14 is a rechargeable battery such as a lithium ion battery, and supplies power to the drive mechanism 13, the control unit 16, the receiving unit 20 and the like.

  The ground plate 17 is made of a nonconductive plastic material and is disposed on the back surface of the dial 2. An opening 171 is formed in the central portion of the ground plane 17 as shown in FIG.

A date wheel 18 is disposed on the ground plate 17. The date dial 18 is made of a nonconductive plastic material and has an annular shape. On this date wheel 18, the numbers 1 to 31 as a date display are printed. As described above, since the date dial 18 needs printing for 31 days, if the diameter is too small, one character becomes small and it becomes difficult to see.
For this reason, as shown in FIG. 4, the diameter of the date dial 18 is made larger than half the diameter of the dial 2 and the main plate 17. The date dial 18 is disposed so that a part of the date dial 18 is positioned on the opening 171 according to the position of the date window 2A of the dial 2, and the number printed on the date dial 18 corresponds to that of the dial 2. It is exposed from the date window 2A so that the date can be viewed from the outside.

The patch antenna 19 is for receiving a circularly polarized wave transmitted from a position information satellite in the present embodiment. Here, the principle of operation of the patch antenna is that since the strong electric field along the edge of the patch (antenna electrode) is radiated from the edge of the patch toward space (when used for a transmitting antenna), the antenna upper surface as well as the antenna The side also needs to be separated from the metal by about several mm. The patch antenna of the present invention refers to a flat antenna in which a ground plane and an antenna electrode are disposed substantially in parallel, and one side resonates at a half wavelength, but one side of the antenna electrode is shorted to the ground plane. And an inverted F antenna that resonates at a quarter wavelength. The inverted F antenna is a half antenna that reduces the radiation electrode of the half-wave patch antenna to miniaturize the antenna, but the operating principle for radiating radio waves from the antenna side is the same as the half-wave patch antenna is there. Also, a so-called chip antenna in which an inverted F antenna is configured on a ceramic dielectric is also included in the patch antenna of the present invention. The point is that the patch antenna of the present invention is a section as an operating principle of the antenna.
Specifically, as shown in FIG. 5A, the patch antenna 19 according to the present embodiment has a ceramic dielectric 193 laminated on an antenna substrate 191 serving as a ground plane, and a conductive antenna on the dielectric 193. This is a patch antenna in which the electrodes 194 are integrally formed by printing of silver (Ag) or the like. In FIG. 5A, a dotted line 195 indicates a radio wave received by the patch antenna 19, and an arrow 196 indicates an electric line of force.
Here, in order to easily adjust the frequency of the patch antenna 19, the antenna substrate 191 is configured with a substrate different from the circuit substrate 12 on which the receiving unit 20, which is a GPS receiving module, is mounted. The signal line of the antenna substrate 191 of the patch antenna 19 is soldered to the circuit board 12 after frequency adjustment.

FIG. 5B is a characteristic diagram showing a radiation pattern of the patch antenna 19. Here, as shown in FIG. 3, the plane direction of the patch antenna 19 is taken as an X axis, and the zenith direction is taken as a Z axis.
Since the patch antenna 19 has the most directivity in the Z-axis direction which is the zenith direction as shown in FIG. 5B, it is most easy to receive the radio wave incident in the vertical direction with respect to the dial 2. Further, the directivity in the X-axis direction, which is the side direction of the patch antenna 19, is smaller than that in the Z-axis direction but has a certain degree of strength, so the metal case 11 is disposed close to the side surface of the patch antenna 19. And reception performance will be affected.
On the other hand, since the directivity in the -Z-axis direction, which is the lower surface direction of the patch antenna 19, is weak, the metal battery 14 is disposed on the lower surface side as compared to a nondirectional antenna having uniform directivity in the periphery. Even if it does not affect the reception performance.

The patch antenna 19 is formed in a rectangular shape in a plan view, and is inserted into the rectangular opening 171 of the base plate 17. Therefore, a part of the date dial 18 is disposed on the upper surface (the dial 2) side of the patch antenna 19.
The patch antenna 19 is disposed at a position separated from the inner circumferential surface of the cylindrical case 111 by a predetermined dimension or more. Specifically, as shown in FIG. 4, the minimum distance L between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111 is set to a predetermined dimension or more. In the present embodiment, the patch antenna 19 is disposed at the plane center position of the GPS wristwatch 1A, and therefore, the distance L is set to be the largest as compared with the case where the patch antenna 19 is disposed at a position deviated from the plane center position. ing.

Here, the specific size of the “predetermined size” is the reception of the patch antenna 19 without deterioration of the reception characteristic caused by bringing the patch antenna 19 close to the cylindrical case 111 made of a metal material, and without being blocked by the cylindrical case 111. The reception performance required for the GPS wristwatch 1A may be set in consideration of the incident angle range of the radio wave that can be generated.
In the present embodiment, the dial 2 is disposed at substantially the same height position as the upper surface of the cylindrical case 111, and the patch antenna 19 is disposed on the back of the dial 2 with the date wheel 18 interposed therebetween. For this reason, the upper surface of the patch antenna 19 is located on substantially the same plane as the upper surface of the cylindrical case 111.

The stepping motors 131 to 135 and the wheel trains 136 and 137 of the drive mechanism 13 are disposed between the patch antenna 19 and the inner peripheral surface of the cylindrical case 111. Therefore, the "predetermined size" is a size in which the stepping motors 131 to 135 can be disposed. Further, as shown in FIGS. 2 and 3, the pointer shafts 320, 420, 520, and 620 driven by the drive mechanism 13 are also disposed between the patch antenna 19 and the inner peripheral surface of the cylindrical case 111.
Accordingly, in the movement 10 of the present embodiment, the stepping motors 131 to 135, the wheel trains 136 and 137, and the pointer shafts 320, 420, 520 and 620 are disposed around the patch antenna 19. In other words, the patch antenna 19 is disposed between the pointer axes 320 and 620 and between the pointer axes 420 and 520.
Although the pointer shafts 320, 420, 520, and 620 are usually made of metal, since they are made of a thin pipe-like member, etc., even if they are disposed closer to the patch antenna 19 than the exterior case 11. There is almost no influence on the reception performance. If the pointer shafts 320, 420, 520, and 620 are made of a non-conductive member such as plastic, the influence on the reception performance can be further reduced.

  In the movement 10 of the present embodiment, the drive mechanism 13, the patch antenna 19, the circuit board 12, and the secondary battery 14 are arranged in layers in order from the dial 2 side to the back cover 112 side. The receiving unit 20 and the control unit 16 mounted on the circuit board 12 are disposed on the back side (the back cover 112 side) of the circuit board 12.

A magnetic sheet 81 is disposed on the lower side of the secondary battery 14 (on the side of the back cover 112), and a charging coil 82 is disposed via the magnetic sheet 81. Therefore, the secondary battery 14 can charge electric power from the external charger (not shown) by non-contacting electromagnetic induction by the charging coil 82. Therefore, in the portion of the back cover 112 overlapping in plan with the charging coil 82, the above-described second back cover 112B made of glass is disposed for power transfer.
Further, the magnetic sheet 81 disposed on the upper side (secondary battery 14 side) of the charging coil 82 is provided to reduce the eddy current loss of the metal can of the secondary battery 14 due to the magnetic field induced in the charging coil 82. It is done.

The GPS wristwatch 1 </ b> A includes a bezel 121 attached to the upper surface side of the cylindrical case 111.
The bezel 121 is formed in a ring shape, and is connected to the cylindrical case 111 by a fitting structure. A cover glass 122 is attached to the inner circumferential surface of the bezel 121.

Further, on the inner peripheral side of the bezel 121, a dial ring 123 is provided.
The dial ring 123 is formed in a ring shape whose outer peripheral diameter matches the dial 2, and the inner peripheral portion is an inclined surface facing the dial 2.
Here, most of the radio waves received by the patch antenna 19 pass through the cover glass 122 and enter the patch antenna 19. For this reason, even if the bezel 121 and the dial ring 123 are made of metal, the patch antenna 19 can not prevent reception. However, the bezel 121 and the dial ring 123 are disposed on the upper surface side of the patch antenna 19 and affect the reception at the patch antenna 19, so they are formed of a nonconductive material in the present embodiment. At this time, although the bezel 121 may be made of plastic, it is exposed to the outside and easily scratched, and therefore, the bezel 121 is made of ceramic which is high in hardness and hard to be scratched.

[Circuit configuration of GPS watch]
FIG. 6 is a schematic view showing a circuit configuration of the GPS wristwatch 1A.
As shown in FIG. 6, the GPS wristwatch 1A includes a patch antenna 19, a filter (SAW) 192, a receiver 20, a control display 70, and a power supply 80.
A filter (SAW) 192 is a band pass filter that extracts satellite signals of 1.5 GHz. Further, an LNA (low noise amplifier) for improving the reception sensitivity may be separately incorporated between the patch antenna 19 and the filter 192.
The filter (SAW) 192 may be incorporated in the receiving unit 20.

The receiving unit 20 processes satellite signals extracted by the filter 192, and includes an RF unit (Radio Frequency: radio frequency) 21 and a baseband unit 22.
The RF unit 21 includes a PLL circuit 211, an IF filter 212, a VCO (Voltage Controlled Oscillator) 213, an ADC (A / D converter) 214, a mixer 215, an LNA (Low Noise Amplifier) 216, an IF amplifier 217, and the like. .

The satellite signal extracted by the filter 192 is amplified by the LNA 216, mixed with the signal of the VCO 213 by the mixer 215, and down-converted to IF (Intermediate Frequency).
The IF mixed by the mixer 215 passes through an IF amplifier 217 and an IF filter 212, and is converted into a digital signal by an ADC (A / D converter) 214.

The baseband unit 22 includes a digital signal processor (DSP) 221, a central processing unit (CPU) 222, and a static random access memory (SRAM) 223. In addition, a crystal oscillation circuit (TCXO) 23 with a temperature compensation circuit, a flash memory 24 and the like are also connected to the baseband unit 22.
The baseband unit 22 receives a digital signal from the ADC 214 of the RF unit 21 and calculates satellite signals based on the control signal to acquire satellite time information and positioning information.
The clock signal for the PLL circuit 211 is generated from a crystal oscillation circuit (TCXO) 23 with a temperature compensation circuit.

The control display unit 70 includes a control unit (CPU) 16, a drive circuit 130 for driving the hands 32 and the like, a first time display unit 3, a second time display unit 4, a longitude display unit 5, and a latitude display unit 6. And the like.
The control unit 16 includes an RTC (Real Time Clock) 16A and a storage unit 16B as hardware.
The RTC 16A measures internal time information using a reference signal output from the crystal oscillator 161. Therefore, the clocking means of the present invention is constituted by the RTC 16A.
The storage unit 16B stores time data and positioning data output from the receiving unit 20. In addition, time difference data corresponding to positioning information is also stored in the storage unit 16B, and the local time of the present location can be calculated using the internal time information and time difference data clocked by the RTC 16A.

The GPS wristwatch 1A according to the present embodiment can automatically correct the time display based on the reception signal from the GPS satellite by including the reception unit 20 and the control display unit 70 as described above.
The control unit 16 operates the reception unit 20 to perform reception processing when the internal time counted by the RTC 16A reaches a preset regular reception time (for example, 3 am), and an operation. It is set to execute the manual reception process of performing the reception process by the manual operation of the button 8 or the like. Therefore, the scheduled reception means of the present invention is configured by the control unit 16.

  The power supply unit 80 includes a charge coil 82, a charge control circuit 83, a secondary battery 14, a first regulator 84, a second regulator 85, and a voltage detection circuit 86.

The charging coil 82 supplies power to the secondary battery 14 through the charge control circuit 83 to charge the secondary battery 14.
The secondary battery 14 supplies drive power to the control display unit 70 via the first regulator 84, and supplies drive power to the receiver 20 via the second regulator 85.
The voltage detection circuit 86 monitors the voltage of the secondary battery 14 and outputs the voltage to the control unit 16. Therefore, the control unit 16 can control the reception process by grasping the voltage of the secondary battery 14.

According to the GPS wristwatch 1A of the present embodiment described above, the following effects can be obtained.
In the present embodiment, since the patch antenna 19 is separated from the inner peripheral surface of the cylindrical case 111 by a predetermined size or more, even when a conductive member (for example, a metal material) is employed for the cylindrical case 111, the conductive cylinder The influence of case 111 can be reduced, and a drop in reception performance can be prevented. In particular, in the present embodiment, the patch antenna 19 is disposed at the center of the plane of the GPS wristwatch 1A, so that the distance L can be maximized and the reception performance is also the highest as compared to the case where the patch antenna 19 is disposed at other positions. It can be expensive.
Further, when the patch antenna 19 is disposed apart from the inner peripheral surface of the outer case 11 by a predetermined dimension or more, the pointer shafts 320, 420, 520, 620 and the wheel train 136, are provided in the space between the patch antenna 19 and the case 11. Since the 137 is disposed, space can be effectively used, and the watch can be miniaturized.

  Further, even when the upper end position of the cylindrical case 111 is set to substantially the same height as the upper surface of the patch antenna 19, the patch antenna 19 is disposed at the plane center position of the GPS wristwatch 1A. Not only the radio waves incident from above but also the radio waves incident from diagonal directions can be received without being blocked by the cylindrical case 111. Therefore, in the appearance of the watch 1A, the proportion of the metal cylindrical case 111 can be increased, and the texture of the watch 1A can be improved while securing good reception performance of the patch antenna 19.

Further, since the interval L is a dimension capable of disposing the stepping motors 131 to 135, the stepping motors 131 to 135 can be disposed at any position around the patch antenna 19, and the stepping motors 131 to 135 can be disposed. The degree of freedom in the layout of the hands 32, 42, 52, 62 driven by the stepping motors 131 to 135 can be improved, and the space around the patch antenna 19 can be effectively used.
Therefore, a general analog watch in which the pointer axis is provided at the center of the plane of the dial 2 can constitute a watch having a different layout of the hands 32, 42, 52, 62, as in the present embodiment. A plurality of pointer axes 320, 420, 520, and 620 can be disposed around the periphery, and a multi-hand clock capable of displaying other longitude and latitude information and the like in addition to time information can be easily configured.

  Furthermore, since the stepping motors 131 to 135 serving as drive sources for driving the hands 32, 42, 52, 62 are disposed between the inner peripheral surface of the cylindrical case 111 and the outer peripheral surface of the patch antenna 19, the patch antenna 19 and the stepping motors 131 to 135 do not overlap in the thickness direction of the GPS wristwatch 1A. For this reason, in the present embodiment, the thickness dimension of the GPS wristwatch 1A can be made smaller than that of the timepiece in which the patch antenna 19 and the stepping motors 131 to 135 overlap in the thickness direction. In particular, the patch antenna 19 and the stepping motors 131 to 135 are parts having a relatively large thickness among the parts of the GPS wristwatch 1A. The thickness dimension of can be significantly reduced.

  Also, the patch antenna 19 is a flat antenna, and is known to have a single directivity and a narrow directivity. However, the circuit board 12 on which the patch antenna 19 is disposed has a function of a ground plate. Thus, the radio wave incident from the outside can be reflected on the circuit board 12 and guided to the patch antenna 19. Therefore, not only the radio wave directly incident on the patch antenna 19 but the patch antenna 19 can receive the radio wave reflected by the circuit board 12 and incident indirectly. Therefore, better reception performance of the patch antenna 19 can be secured.

  Further, since the patch antenna 19 receives circularly polarized radio waves, for example, if it is a clock having a function of performing time correction using time information included in satellite signals, position information can be used anywhere on the earth The radio waves from the satellite can be received reliably and accurate time can be maintained at all times.

Second Embodiment
FIG. 7 is a schematic cross-sectional view showing a GPS wristwatch 1B according to a second embodiment of the present invention. FIG. 8 is an exploded perspective view schematically showing the main parts of the GPS wristwatch 1B of this embodiment. In the description of the drawings, the same components as those of the embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.
In the above-described embodiment, power is supplied to the secondary battery 14 by the charging coil 82. However, in the present embodiment, the solar panel 87 is adopted to supply power to the secondary battery 14. .
Further, in the present embodiment, since the charging coil 82 is not used, it is not necessary to adopt the second back cover 112B made of glass for power transfer, and the entire back cover 112 is formed of a metal material. .

The solar panel 87 is disposed between the dial 2 and the date wheel 18, as shown in FIGS. The solar panel 87 has a rectangular opening 87A at the central portion for exposing the patch antenna 19, and is formed in an annular shape. The opening 87A is formed at the same planar position as the opening 171 of the ground plate 17 so as to have the same shape and size. For this reason, the date window 2A of the dial 2 is formed at a position overlapping in a plane not only the opening 171 but also the opening 87A.
The solar panel 87 is a general solar panel, which consists of four solar cells and is provided with a metal substrate. Each solar cell is connected in series, and four through holes 87B through which the pointer shafts 320, 420, 520 and 620 are inserted are formed on the dividing lines of each solar cell, so the area of the solar cell is maximum The limit is secured. The solar panel 87 generates power by light incident from the cover glass 122 side. The electric power generated by the solar panel 87 is stored in the secondary battery 14 via the charge control circuit 83 as in the first embodiment. Here, the dial 2 is made of a translucent resin material such as polycarbonate, and does not prevent the light from entering the solar panel 87.

When the opening 87A is formed in the solar panel 87, the light receiving area is reduced accordingly and the amount of power generation is reduced. Therefore, in terms of power generation performance, it is preferable that the area of the opening 87A be as small as possible.
On the other hand, since the solar panel 87 is provided with a metal substrate, radio waves passing through other than the opening 87A are largely attenuated. Therefore, in order to improve the reception performance of the patch antenna 19, it is preferable that the area of the opening 87A be as large as possible.
Therefore, the area of the opening 87A may be set in consideration of the above two conditions. In the present embodiment, it is set to the same size as the planar area of the patch antenna 19.

According to the GPS wristwatch 1B of the present embodiment described above, the following effects can be obtained in addition to the effects exhibited by the first embodiment.
In this embodiment, since the solar panel 87 is disposed on the back side of the dial 2 having translucency, the power generated by the solar panel 87 is charged to the secondary battery 14, and the GPS-equipped wristwatch is used with this power. 1B can be driven. Therefore, as in the first embodiment, it is not necessary to replace the battery as in the case of using the primary battery, and the convenience for the user can be improved.
Moreover, in the first embodiment, in order to charge by electromagnetic induction, it is necessary to arrange the non-metallic second back cover 112B on the back cover 112, but in the second embodiment, the solar panel 87 is used. For charging, the back cover 112 can be made of metal, and the texture of the GPS wristwatch 1B can be further improved.

  In addition, the solar panel 87 has a metal substrate, which attenuates high frequency radio waves such as GPS satellite signals. However, in the present embodiment, the solar panel 87 has the opening 87A. The radio wave can be incident on the patch antenna 19 through the opening 87A. Therefore, the patch antenna 19 can receive a radio wave which does not pass through the solar panel 87, so that the attenuation of the radio wave by the solar panel 87 can be prevented and the reception performance can be improved.

  Furthermore, since the date window 2A of the dial 2 is disposed at a position overlapping with the opening 87A of the solar panel 87, there is no need to separately form an opening for exposing the date wheel 18 to the solar panel 87. Compared to the case where the opening is separately provided, the light receiving area can be increased, and the power generation performance can be improved.

Third Embodiment
FIG. 9 is an exploded perspective view showing the main part of a GPS wristwatch 1C according to a third embodiment of the present invention. In the description of the drawings, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In the present embodiment, the patch antenna 19A is formed in a circular shape in a plan view, and is different from the patch antenna 19 in a rectangular shape in a plan view of the first embodiment in that the shape is different.
In the present embodiment, the solar panel 87 is provided. However, the solar panel 87 may not be provided.

  Since the patch antenna 19A is formed in a circular shape in plan view, the opening 87A of the solar panel 87 and the opening 171 of the ground plate 17 are each formed in a circular shape according to the shape of the patch antenna 19A. Also, the antenna substrate 191A is similarly formed in a circular shape in plan view.

According to the GPS wristwatch 1C of this embodiment described above, the following effects can be obtained in addition to the effects exhibited by the first and second embodiments.
In the present embodiment, since the patch antenna 19A is formed in a planar circular shape, when the planar shape is accommodated in the case 11 having a circular shape, the planar rectangular patch antenna 19 of each of the above embodiments is accommodated. The space in the case 11 can be used more effectively than in the case of
The resonant frequency of the patch antenna 19A having a circular shape in a plan view can be obtained by the following equation (1). On the other hand, in the patch antenna 19 of the first and second embodiments formed in a planar rectangular shape, the length of one side thereof is a half wavelength of the radio wave to be received. Therefore, when the patch antennas 19 and 19A are formed of the same dielectric, the flat circular patch antenna 19A and the flat rectangular patch antenna 19 have substantially the same area.

・・・式（１）
ｆ：共振周波数、Ｃ:光速、ａ：パッチアンテナの半径、εr：誘電体の比誘電率

... Formula (1)
f: resonant frequency, C: speed of light, a: radius of patch antenna, ε r: relative permittivity of dielectric

In this embodiment, since the patch antenna 19A has a circular shape in a plan view, the distance L between the patch antenna 19A and the inner peripheral surface of the cylindrical case 111 can be made larger than in the first and second embodiments. Therefore, the degree of freedom in arranging the stepping motors 131 to 135 can be further enhanced. Further, when the distance L is made the same as that of the first embodiment, the planar size of the cylindrical case 111 can be reduced, and the GPS wristwatch 1C can be miniaturized.
In addition, if the size of the solar panel 87 is the same as that of the first embodiment, the area of the opening 87A can be smaller than that of the first embodiment, and accordingly, the light receiving area becomes larger and the power generation amount is increased. Can.

Fourth Embodiment
FIG. 10 is a plan view of a GPS wristwatch 1D according to a fourth embodiment of the present invention. FIG. 11 is a perspective view showing the circuit board 12. FIG. 12 is a schematic cross-sectional view of the GPS wristwatch 1D. In the description of the drawings, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
Although the dial 2 of each said embodiment was formed in planar view circular shape, in this embodiment, it is formed in planar view elliptical shape. In the embodiment, one secondary battery 14 is used, but in the present embodiment, two batteries 14A having a diameter smaller than the diameter of the secondary battery 14 are used. It is different.

  The dial 2 is formed in an elliptical shape in plan view in which the diameter in the left-right direction in FIG. 10 is longer than the diameter in the up-down direction. Therefore, the space at the 3 o'clock position and the 9 o'clock position in the general timepiece of the dial 2 is formed wider than the space at the 12 o'clock position and the 6 o'clock position. In the present embodiment, by arranging the first time display unit 3 at the 3 o'clock position and the second time display unit 4 at the 6 o'clock position, the first time display unit 3 is completely planar with the patch antenna 19. It is arranged in the position which does not overlap.

The shape of the dial 2 is an elliptical shape in plan view, and accordingly, the circuit board 12 and the base plate 17 are also elliptical in plan view.
The diameter in the vertical direction of the movement 10 of this embodiment is the same as the diameter in the vertical direction of the movement 10 of each of the embodiments, and the diameter in the left and right direction of the movement 10 of this embodiment is the movement 10 of each of the embodiments. The area in plan view of the movement 10 of the present embodiment is larger than the area in plan view of the movement 10 of each of the embodiments.

As shown in FIG. 11, the circuit board 12 has, on the left and right sides of the patch antenna 19, two notches 12A having sizes that allow the battery 14A to be inserted.
The notch 12A is formed at a position corresponding to the 3 o'clock position and the 9 o'clock position of the dial 2 according to the shape and size of the battery 14A, and is formed at a position not overlapping the patch antenna 19 in plan view. .

In the present embodiment, a primary battery is adopted as the battery 14A. The battery 14A is connected in parallel in order to ensure the same battery capacity as the secondary battery 14 used in each of the above-described embodiments, and the size, for example, diameter size, of the battery 14A is smaller than that of the secondary battery 14. Small ones are used. The battery 14A is disposed at the 3 o'clock position and the 9 o'clock position of the dial 2, as shown in FIGS. 11 and 12, and a part in the height direction is inserted into the notch 12A of the circuit board 12.
Although the battery 14A in the present embodiment is a primary battery, as in the first to third embodiments, the secondary battery 14 that generates power by being charged by the charging coil 82 or the solar panel 87 is employed. You may

According to the GPS wristwatch 1D of the present embodiment described above, the following effects can be obtained in addition to the effects achieved by the first embodiment.
In the present embodiment, a battery having a smaller diameter than the secondary battery 14 of each of the above embodiments is employed. Therefore, even if the patch antenna 19 and the batteries 14A are laid out so as not to overlap in plan view as in the present embodiment, a large increase in the planar size of the GPS wristwatch 1D can be prevented.
In addition, since the patch antenna 19 and the batteries 14A are disposed so as not to overlap in plan view, the thickness dimension of the GPS wristwatch 1D compared to the case where the patch antenna 19 and the batteries 14A are disposed overlapping in the thickness direction. Can be made smaller.

Furthermore, the first hand 32 of the first time display unit 3 has three hands of a first second hand 321, a first minute hand 323, and a first hour hand 322, which are made of metal, and other display units 4 to 6 There are a large number of guidelines compared to. Therefore, when the first time display unit 3 is disposed at a position overlapping the patch antenna 19 in plan view, the possibility of overlapping the pointer 32 with the patch antenna 19 becomes high compared to the other display units 4 to 6. This may affect the reception performance of the patch antenna 19.
Therefore, in the present embodiment, the dial 2 is formed in an elliptical shape in plan view, and the spaces at the 3 o'clock and 9 o'clock positions are formed wider than the spaces at the 12 o'clock and 6 o'clock positions. The first time display unit 3 is disposed in As a result, the first time display unit 3 can be disposed at a position not overlapping the patch antenna 19 in plan view, and the influence of the first pointer 32 on the reception performance of the patch antenna 19 can be prevented.

Fifth Embodiment
FIG. 13 is a plan view of a GPS wristwatch 1E according to a fifth embodiment of the present invention. FIG. 14 is a plan view showing a needle position state at the time of reception processing. In the description of the drawings, the same components as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof will be omitted.

As in the fourth embodiment, the dial 2 of the present embodiment is formed in an elliptical shape in plan view in which the diameter in the left-right direction is longer than the diameter in the vertical direction.
Further, at the 3 o'clock position (on the side of the crown 9) of the dial 2, as a first display portion, a first time display portion 3 having a planar circular shape is disposed. In addition, at the 10 o'clock position of the dial 2, as a second display unit, a planar circular second time display unit 4A is disposed. In the second time display unit 4A of this embodiment, the second hour hand 422 is a 24-hour hand that rotates once in 24 hours, and the scale display unit 41A is also in 24-hour scale display.

Furthermore, at the 7 to 8 o'clock position of the dial 2, as a third display unit for displaying the remaining battery capacity and the reception signal level, a mode circular status display unit 90 of a plane circular shape is arranged.
The mode status display unit 90 is provided with a scale display unit 91 that indicates the reception signal level. The scale display portion 91 displays a strip-shaped scale 911 which is arc-shaped and gradually increases in width as it moves in the arc direction, and the battery remaining capacity and the signal level are high at the wide end thereof. The letter "H" is displayed to indicate that.
A pointer 92 of the mode status display unit 90 is made of metal like the other pointers 32 and 42, displays the remaining battery capacity except during reception operation, and displays the reception level during reception operation.

Here, in the respective embodiments, the display portions 3 to 6 have substantially the same size, but in the present embodiment, the first time display portion 3 is set larger than the other display portions. The first time display unit 3 has a size that occupies approximately half of the area of the dial 2, and the current time displayed on the first time display unit 3 can be easily viewed.
The other display portions 4A, 90 are set to have a diameter about half that of the first time display portion 3.
Then, the plane center position of the first time display unit 3 (the position of the pointer shaft 320) and the plane center positions of the second time display unit 4A and the mode state display unit 90 (the positions of the pointer axes 420 and 95) The plate 2 is disposed offset in the long axis direction (left and right direction) of the plate 2.
The planar center positions (positions of the pointer axes 420 and 95) of the second time display unit 4A and the mode state display unit 90 are disposed offset in the short axis direction (vertical direction) of the dial 2.

  A date display unit 7 is provided at a position surrounded by these three display units 3, 4 </ b> A, 90. The date display unit 7 includes a circular hole formed in the dial 2, and a date dial 18 disposed below the dial 2 and exposed from the hole. Furthermore, a patch antenna 19 is disposed below the circular hole of the date display unit 7.

  The patch antenna 19 is disposed at a position where a portion thereof overlaps the display portions 3, 4 A, 90 in plan view. The patch antenna 19 is disposed at a position not overlapping the pointer shaft 320 of the first pointer 32, the pointer shaft 420 of the second pointer 42, and the pointer shaft 95 of the pointer 92 in plan view.

Specifically, the patch antenna 19 is disposed between each of the pointer shafts 420 and 95 in the direction in which the pointer shaft 420 and the pointer shaft 95 are connected (short axis direction of the dial 2).
Similarly, the patch antenna 19 is disposed between each pointer shaft 420 and the pointer shaft 320 also in the direction in which the pointer shaft 420 and the pointer shaft 320 are connected.
Furthermore, the patch antenna 19 is also disposed between each pointer shaft 320 and the pointer shaft 95 in the direction in which the pointer shaft 320 and the pointer shaft 95 are connected.
Therefore, the patch antenna 19 is disposed closer to the pointer shafts 95 and 420 than the pointer shaft 320 in the direction of the major axis of the dial 2.
Note that, in the above, that the patch antenna 19 is disposed between the pointer axes means that a part of the patch antenna 19 is disposed on an axis connecting the two pointer axes. At this time, assuming two lines orthogonal to an axis connecting the two pointer axes and passing respectively through the two pointer axes, it is preferable that the patch antenna 19 be disposed between these lines. For example, that the patch antenna 19 is disposed between the pointer shaft 420 and the pointer shaft 95 means that a part of the patch antenna 19 is disposed so as to overlap the axis connecting the pointer shaft 420 and the pointer shaft 95. Do. Then, assuming two lines orthogonal to the axis and passing through the pointer axes 420 and 95, it is preferable that the patch antenna 19 be disposed between these lines.

Further, below the dial 2, a stepping motor 141 for driving the first hour hand 322 and the first minute hand 323 of the first time display unit 3, a stepping motor 142 for driving the first second hand 321, and a date dial 18 , A stepping motor 144 for driving the second hour hand 422 and the second minute hand 421 of the second time display unit 4A, and a stepping motor 145 for driving the pointer 92 of the mode state display unit 90. ing.
Since these stepping motors 141 to 145 have the same configuration as the stepping motors 131 to 135 of the embodiment, the description will be omitted.

These stepping motors 141 to 145 assume division line D passing through the center of patch antenna 19 as shown in FIG. 13, and dial plate 2 is divided into two areas in plan view by division line D. , Are arranged in one area.
The driving force of the stepping motor 144 is transmitted to the pointer shaft 420 through the train of wheels 146 to drive the second minute hand 421 and the second hour hand 422. Similarly, the driving force of the stepping motor 145 is transmitted to the pointer shaft 95 via the wheel train 147 and drives the pointer 92. The respective wheel trains 146 and 147 are disposed between the patch antenna 19 and the inner circumferential surface of the exterior case 11 as with the pointer shafts 420 and 95.
Further, the other stepping motors 141 to 143 also drive the first hour hand 322, the first minute hand 323, the first second hand 321, and the date wheel 18 via a wheel train not shown, but these wheel trains also have patches It is disposed between the antenna 19 and the inner circumferential surface of the outer case 11.

In the present embodiment, the dividing line D is set along the 12-6 o'clock direction (the extension direction of the band) of the dial 2. Further, the patch antenna 19 is disposed at a position where the center position is shifted in the 9 o'clock direction (the opposite side to the side on which the crown 9 is provided) with respect to the plane center position of the dial 2.
Therefore, when the dial 2 is divided into two areas in plan view by the dividing line D, the area on the 3 o'clock side of the dividing line D has a larger area than the area on the 9 o'clock side. The stepping motors 141 to 145 are disposed in this wide area.

On the other hand, the stepping motors 141 to 145 are not provided in the area on the 9 o'clock side of the dividing line D. In the first embodiment, as shown in FIG. 4, the stepping motors 131 to 135 are disposed around the patch antenna 19, and the patch antenna 19 is substantially surrounded by the stepping motors 131 to 135. On the other hand, in the present embodiment, as shown in FIG. 13, the stepping motors 141 to 145 are not disposed in approximately half of the area around the patch antenna 19, and the stepping motors 141 to 145 are It does not completely surround the patch antenna 19.
Therefore, in the GPS wristwatch 1E, the radio wave from the 9 o'clock direction of the dial 2 can be received by the patch antenna 19 without being influenced by the stepping motors 141 to 145.

  The movement, the battery and the like of the present embodiment can be the same as those of the above embodiment. The battery may be a primary battery or, as in the first to third embodiments, a secondary battery 14 charged with a charging coil or a solar panel may be employed.

In the GPS wristwatch 1E of the fifth embodiment, the first time display unit 3 and the second time display unit 4A constitute a dual time display mechanism for displaying the time of two different areas having a time difference.
For example, the first time display unit 3 can be used as a basic clock to indicate the current time, and the second time display unit 4A can be used as a sub clock to indicate the time of another area set in advance. 13 and 14 show Japan Standard Time (JST), which is a time difference area of +9 hours with respect to Coordinated Universal Time (UTC) in the first time display unit 3, and in the second time display unit 4A, Coordinated Universal Time (JST) is shown. It shows the time of +7 hours difference area (eg, Thailand) to UTC). In the example of FIG. 13, the first time display unit 3 of 12 hours display indicates 10:08:36 to 37 seconds, and the second time display unit 4A of 24 hours displays 20: 8 ( 8:00 pm) is indicated.

Next, the reception operation in the present embodiment will be described.
The GPS wristwatch 1E has a regular reception mechanism (automatic reception mechanism) that performs reception processing at a predetermined time, and a manual reception mechanism that performs reception processing by a button operation of the user, as in the above embodiments. ing.

That is, the control unit 16 of the GPS wristwatch 1E includes a scheduled reception mechanism that starts reception when the internal time reaches a predetermined time. Here, the internal time is clocked by the RTC 16A shown in FIG.
The scheduled reception mechanism controls the scheduled reception to start at a time when the hands 32 and 42 displaying the time do not overlap with the patch antenna 19 in plan view.
That is, the control unit 16 confirms the time difference information between the pointer 32 of the first time display unit 3 and the pointer 42 of the second time display unit 4A, and performs regular reception at the time preset according to the time difference information. Start.
For example, when the first hour hand 322 of the first time display unit 3 designates a range of 8 to 10 o'clock, and when the first minute hand 323 designates a range of 40 to 50 minutes, either of the hands 322, The H.323 may overlap the patch antenna 19 in plan view. Therefore, the scheduled reception time is set to a time when the first hour hand 322 instructs out of the range from 8 o'clock to 10 o'clock, and a time when the first minute hand 323 instructs out of the range from 40 minutes to 50 minutes. Specifically, it is a time at which the first hour hand 322 indicates a range of 0 o'clock (12 o'clock) to 8 o'clock (20 o'clock) or a range of 10 o'clock (22 o'clock) to 12 o'clock (24 o'clock), In addition, the time is set such that the first minute hand 323 indicates a range of 0 to 40 minutes or a range of 50 to 60 minutes.

  Similarly, when the second hour hand 422 of the second time display unit 4A indicates a range of 6 o'clock to 12 o'clock, and when the second minute hand 421 indicates a range of 15 to 30 minutes, either of the hands 421 and 422 may overlap the patch antenna 19 in plan view. Therefore, the scheduled reception time is a time when the second hour hand 422 instructs out of the range from 6 o'clock to 12 o'clock, and is set to a time when the second minute hand 421 instructs out of the range from 15 minutes to 30 minutes. Specifically, it is the time at which the second hour hand 422 designates the range from 0 o'clock to 6 o'clock, or the range from 12 o'clock to 24 o'clock, and the second minute hand 421 ranges from 0 to 15 minutes or 30 minutes It is set to a time that indicates a range of 60 minutes.

  Therefore, the control unit 16 sets the scheduled reception time within the range in which the hands 32 and the hands 42 satisfy the respective conditions. Since the time that satisfies this condition differs depending on the time difference between the times displayed on the first time display unit 3 and the second time display unit 4A, the control unit 16 starts scheduled reception at the time set in advance according to the time difference. It is to do. In the example illustrated in FIG. 14, the time indicated by the second time display unit 4A is a time difference of -2 hours with respect to the time indicated by the first time display unit 3. Therefore, as an example, if it is set so that scheduled reception is performed at the timing of 3:00 am on the first time display unit 3 and 1:00 am on the second time display unit 4, each pointer 32, 42 The receiving operation can be performed in a state in which it does not overlap the patch antenna 19 in plan view.

During the reception operation, the first second hand 321 moves to the display position during reception (Receive) (position indicating the 12 o'clock direction in the scale display section 31) and stops. The dial 2 is written as "R" to indicate the display position during reception. Therefore, the first second hand 321 does not move to a position overlapping the patch antenna 19 in plan view during the receiving operation.
Also, the pointer 92 does not move to a position overlapping the patch antenna 19 in a planar manner in order to indicate the reception level in the range where the scale 911 and "H" are written during reception operation. The movement of the first second hand 321 and the hand 92 is controlled by a drive circuit 130 which is motor drive control means.
Since the scheduled reception process is executed under such conditions, radio waves are received in a state where the hands 32, 42, 92 are not disposed on the patch antenna 19.

On the other hand, in the manual reception process, when the user operates the button, the reception process is performed. Also in this case, the pointer 92 is not arranged on the patch antenna 19 because it is moved by the drive circuit 130 to display the reception level. The first second hand 321 is also moved to the display position during reception by the drive circuit 130 and stopped.
On the other hand, the first hour hand 322, the first minute hand 323, the second hour hand 422, and the second minute hand 421 do not move in accordance with the reception operation. For this reason, it is preferable that the user perform the manual reception operation at a timing when the needles 322, 323, 421 and 422 are not arranged above the patch antenna 19.

  When receiving a signal from the GPS satellite S and acquiring position data and time data, the control unit 16 corrects the time of the first time display unit 3 based on the information, and interlocks with the second time display unit 4 Also correct the time of

According to the present embodiment, the same effects as those of the above-described embodiments can be obtained, and also the following effects can be obtained.
The stepping motors 141 to 145 are arranged around the patch antenna 19 only in the area on one side divided by the dividing line D. Therefore, the patch antenna 19 can receive satellite signals from the other area side without being affected by the stepping motors 141 to 145, and can also improve the reception sensitivity.

Further, in the present embodiment, since the patch antenna 19 is disposed to be shifted to the 9 o'clock side from the plane center of the dial 2, the area of the region on the 3 o'clock side with respect to the dividing line D can be increased.
Therefore, the arrangement area of the stepping motors 141 to 145 can be enlarged, and it becomes possible to arrange five motors as in this embodiment. Therefore, a multi-handed watch (multi-axial watch) having a plurality of pointer axes can be easily configured.
Furthermore, since the first time display unit 3 is set to a larger size than the other display units 4A and 90, the time of the current location displayed on the first time display unit 3 can be easily viewed, and the convenience is improved. It can improve.

The patch antenna 19 is disposed between the pointer shafts 320, 420, 95. Therefore, the patch antenna 19 can be disposed apart from the inner peripheral surface of the outer case 11 by a predetermined size or more. More specifically, the patch antenna 19 is disposed apart from the inner circumferential surface of the outer case 11 by a size that is the smallest value among the distances between the pointer shafts 320, 420, 95 and the inner circumferential surface of the outer case 11. it can.
Therefore, the influence of the metal outer case 11 can be reduced with respect to the reception of the satellite signal by the patch antenna 19.
In addition, since each pointer shaft 320, 420, 95 and the wheel train 146, 147 can be disposed in the space between the patch antenna 19 and the exterior case 11, the space can be effectively used, and the antenna 19 and the wheel train 146, 147 can be used. The watch can be thinner than in the case of overlapping the watch in the thickness direction of the watch.

Furthermore, the patch antenna 19 is disposed across the three display units 3, 4 </ b> A, 90 in a planar manner. Therefore, in each of the display units 3, 4A, and 90, the area overlapping with the patch antenna 19 in plan view can be reduced as compared with the case where the patch antenna 19 is arranged straddling only the two display units.
Therefore, the range in which the respective hands 32, 42, 92 can be disposed so as not to overlap the patch antenna 19 is wide, and the timed reception processing is performed at times when the respective hands 32, 42 for indicating time do not overlap the patch antenna 19. It can also be done easily.

  The mode status display unit 90 displays the remaining battery capacity at the time of normal movement and displays the reception signal level at the time of reception. Therefore, the user can easily grasp the remaining battery capacity and the reception level by the mode status display unit 90.

Sixth Embodiment
FIG. 15 is a plan view of a GPS wristwatch 1F according to a sixth embodiment of the present invention. Also in the sixth embodiment, the same components as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof will be omitted.

  The GPS wristwatch 1F has a first time display portion 3 and a second time display portion 4A smaller in size than the first time display portion 3 in comparison with the GPS wristwatch 1E of the fifth embodiment. However, the difference is that the mode status display unit 90 is not provided. Therefore, as shown in FIG. 15, the first time display unit 3 and the second time display unit 4A are disposed on the left and right in the dial 2, and the pointer shafts 320 and 420 of the hands 32 and 42 are the dial 2. It is provided on the line connecting 3 o'clock-9 o'clock.

In addition, a battery 14A is disposed on the back side of the dial 2 and at a position where the plane position is in the vicinity of the 12 o'clock position of the dial 2.
Furthermore, similarly to the GPS wristwatch 1E, stepping motors 141 to 144 for driving the hands and the date wheel are provided.

In the GPS wristwatch 1F, the patch antenna 19 is disposed in a range overlapping with the dial 2 in a plane, and is disposed between each pointer 420 and the pointer 320 in the direction connecting the pointer 420 and the pointer 320 ing.
That is, assuming two lines orthogonal to the axis connecting the pointer shaft 320 and the pointer shaft 420 and passing respectively through the pointer shafts 320 and 420, the patch antenna 19 is disposed between these lines.

Furthermore, a part of the patch antenna 19 is disposed at a position overlapping the display units 3 and 4A in plan. Here, the area of the portion where the patch antenna 19 and the display portions 3 and 4A overlap in plan is a direction orthogonal to the axis connecting the pointer axes 320 and 420, and the arrangement position of the patch antenna 19 , As it moves away from the axis, it becomes smaller.
On the other hand, when moving in the same direction, the patch antenna 19 approaches the inner peripheral surface of the outer case 11.
Therefore, the arrangement position of the patch antenna 19 may be set in consideration of the distance from the inner peripheral surface of the outer case 11 and the area of the portion overlapping the display portions 3 and 4A in plan. That is, the separation dimension is preferably large in terms of preventing a decrease in reception sensitivity due to the outer case 11, and the area is small in that the hands 32 and 42 can be easily prevented from overlapping the patch antenna 19 at regular time reception. preferable. Then, as shown in the drawing, when the separation dimension between the patch antenna 19 and the outer case 11 is increased, the area is also increased. The arrangement position of the patch antenna 19 may be designed in consideration of these points.

A display window is opened in the area of the dial 2 where the patch antenna 19 is disposed. Two large and small annular plates (rings) are exposed to the display window.
The inner ring 18A is a date indicator and displays the current day on the display window.
The outer ring 18B is a ring on which a city name indicating the time zone of the time indicated by the second time display unit 4A is displayed. In FIG. 15, TYO (Tokyo) is displayed, and represents the time zone of the time currently displayed on the 2nd time display part 4A.

In the present embodiment, these two rings 18A and 18B are rotationally driven by the stepping motor 143. That is, when the rotor of the stepping motor 143 rotates in a predetermined first direction, the inner ring 18A is rotated in one direction in which the displayed date advances.
Further, when the rotor of the stepping motor 143 is rotated in a second direction opposite to the first direction, the outer ring 18B is rotated in a predetermined one direction.
That is, by switching the rotational direction of the stepping motor 143, the inner and outer rings 18A and 18B are individually rotated.
Alternatively, another stepping motor may be disposed to drive each ring 18A and 18B by different motors.

  Also in this embodiment, a dividing line D1 passing through the plane center point of the patch antenna 19 and passing from the upper left corner to the lower right corner of the patch antenna 19 is set in FIG. When divided into two regions, the stepping motors 141 to 144 are arranged in one region having a large area.

Also in this embodiment, as in the case of the GPS wristwatch 1E, the scheduled reception process is executed at a time when the hands 32, 42 of the display portions 3, 4A do not overlap the patch antenna 19. At this time, the first second hand 321 is moved to the 12 o'clock position and stopped.
In addition, when the manual reception operation is performed, the first second hand 321 is moved to the 12 o'clock position and stopped, and the reception operation is performed.

  Also in the present embodiment, the same effects as those of the above-described embodiments can be obtained. In particular, the same effects as those of the GPS wristwatch 1E according to the fifth embodiment can be obtained.

[Modification of the embodiment]
Note that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like as long as the object of the present invention can be achieved are included in the present invention.
In the above embodiments, the GPS wristwatches 1A to 1F are described as watches, but the present invention is not limited to this, and may be applied to various watches such as pocket watches.

In the first to fourth embodiments, the arrangement position of the patch antenna 19 is the plane center position of the dial 2, but the distance L between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111 is a predetermined dimension As described above, the arrangement position of the patch antenna 19 may be set so as to be separated, and the arrangement position of the patch antenna 19 is not limited to the planar center position as in the fifth and sixth embodiments.
As an example of arrangement of such a patch antenna 19, the following examples shown in FIGS.

FIG. 16 is a plan view showing a GPS wristwatch 1G which is a modification of the GPS wristwatch 1A according to the first embodiment, and FIG. 17 is a rear view of a movement 10 according to the modification. The same components as in the first embodiment are given the same reference numerals, and the description thereof is omitted.
This GPS wristwatch 1G has a first time display unit 3 in the direction of 12 o'clock and a second time display unit 4 in the direction of 6 o'clock, and a present position display unit 500 in the direction of 7 to 8 o'clock and a direction of 4 to 5 o'clock Is provided with a date display unit 7. The present location display unit 500 and the date display unit 7 are digitally displayed by the liquid crystal panel, and the liquid crystal panel is exposed and displayed from the openings 2B and 2C formed in the dial 2. Here, “TYO” is displayed in alphabets in the present location display unit 500 of the present embodiment, which indicates “Tokyo”.
And since only the first and second time display parts 3 and 4 are analog display type, as shown in FIG. 17, two are provided between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111. The stepping motors 131 and 132 are provided. In the pointer shafts 320 and 420 inserted into the centers of the first and second time display portions 3 and 4, the pointers 32 and 42 are driven by the stepping motors 131 and 132.

  Further, as shown in FIG. 17, the first time display unit 3 is formed larger than the first embodiment so that the user can easily view the current time. In this case, since the position of the pointer shaft 320 inserted into the first time display unit 3 is in the vicinity of the plane center position of the GPS wristwatch 1G, there is a possibility that the pointer shaft 320 and the patch antenna 19 overlap in plan. Therefore, the patch antenna 19 can not be disposed at the plane center position as in the above embodiments. Therefore, the patch antenna 19 is disposed so as to be shifted in the 6 o'clock direction from the planar center position. Also in this case, the distance L is set so that the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111 are separated by a predetermined dimension or more.

In each of the embodiments, the circuit board 12 also has a function as a ground plate, but a dedicated ground plate having a function of only the ground plate may be disposed.
In each of the embodiments described above, the space L is formed to a size that allows the stepping motors 131 to 135 to be arranged, but may be formed to a size that can not be arranged to the stepping motors 131 to 135. In this case, the stepping motors 131 to 135 may be disposed at a location having a dimension larger than the distance L between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111.

  In the first to third embodiments, the date window 2A is formed at a position shifted in the direction of 4 to 5 o'clock from the center of the dial 2, but the present invention is not limited to this. The sun window 2A may be formed at a position deviated from the above. However, when the solar panel 87 is disposed above the date indicator 18, it is necessary to make the date visible from the outside by forming an opening in the solar panel 87 or the like. Therefore, in the case where the solar panel 87 is provided, it is more preferable that the date window 2A be formed at an arbitrary position within a range overlapping with the opening 171 in a plane.

  Although the patch antenna 19 has a rectangular shape in plan view in the fourth to sixth embodiments, it may be formed like a circular shape in plan view of the third embodiment.

In the fourth embodiment, the notch 12A is formed in the circuit board 12 in accordance with the shape of the battery 14A. However, the size of the circuit board 12 is reduced, and the battery 14A is planar with the patch antenna 19 It may be arranged at the position which does not overlap.
In the fourth embodiment, the second time display unit 4 having the two hands is disposed at the 6 o'clock position in the general watch of the dial 2, but it is disposed at the 9 o'clock position in the general watch of the dial 2. In this case, the longitude display unit 5 may be disposed at the 6 o'clock position. In this case, since the second time display unit 4 having two hands is disposed at a position not completely overlapping with the patch antenna 19 in a plane, the second pointer 42 affects the reception performance of the patch antenna 19 more It can prevent.

In the fourth to sixth embodiments shown in FIG. 10 to FIG. 15, the direction along the watch band (12 o'clock to 6 o'clock direction in the scale display portion 31 of the watch) is the minor axis direction of the dial 2 Although configured, the direction along the watch band may be configured to be the long axis direction of the dial 2. In this case, since the dial 2 has a vertically-long oval shape, for example, the first time display portion 3 in the fifth embodiment is disposed on the 12 o'clock side of the dial 2 to display the second time display portion 4A or the mode status display. The portion 90 may be disposed on the 6 o'clock side of the dial 2.
The planar shape of the dial 2 in the fourth to sixth embodiments is not limited to an elliptical shape, and may be a rectangular shape, a shape combining a rectangle and a semicircle, or a shape combining a rectangle and a semi-elliptic. That is, the shape of the dial 2 may be set in consideration of the design of the watch.

In each of the above embodiments, all the pointer axes are disposed between the patch antennas 19 and 19A and the exterior case 11, but a through hole is formed in the patch antenna, and a part of the pointer axes is the through hole. May be inserted. For example, when the patch antenna is disposed at the center of the watch, a through hole through which the pointer shaft is inserted is formed at the center of the patch antenna, and the hour hand, minute hand, and second hand are attached to the pointer shaft to display the current time. The first time display unit may be provided at the center of the clock to display a center hand.
In this case, even when the patch antenna is arranged at the plane center position of the dial, the pointer shaft and the pointer can be arranged at the plane center position of the dial. Furthermore, since another pointer axis can be disposed between the antenna and the case, a pointer for displaying the time of a different area or displaying information such as the remaining amount of battery can be disposed around the antenna. Therefore, variations in the layout of the pointer arrangement in the GPS wristwatch can be increased, and a GPS wristwatch with high designability can be realized.
Also, although a through hole is formed at the center of the patch antenna, the impedance at the center is low, so even if the through hole is formed at the center, the influence on the antenna performance can be reduced and the reception performance is maintained. As it is, a clock with a layout similar to a general analog clock can be realized.

In each of the above embodiments, GPS satellites have been described as an example of position information satellites, but as position information satellites of the present invention, not only GPS satellites but also Galileo (EU), GLONASS (Russia), Hokuto (China), etc. Other global navigation satellite systems (GNSS), or geolocation satellites transmitting satellite signals including time information such as geostationary satellites such as SBAS or quasi-zenith satellites may be used.
Further, the present invention is not limited to the radio wave reception of satellite signals from such position information satellites, and may be used as a near field radio receiver of a circularly polarized radio tag using, for example, 900 MHz band.
Furthermore, it can be used not only for receiving circularly polarized waves but also for receiving linearly polarized waves.
Furthermore, when an inverted F antenna is mounted as a patch antenna, it can also be used as a short distance wireless communication device such as a wireless LAN or Bluetooth (registered trademark). Further, in the present embodiment, the receiving function has been mainly described because the application is GPS, but it goes without saying that the device of the present invention (device incorporating an antenna) can be used for the transmitting and receiving function.

  1A to 1G: GPS with watch (antenna built-in type watch), 2: dial plate, 2A: window, 10: movement, 11: outer case, 12: circuit board, 12A: notch, 14, 14A: battery, 18 ... day wheel, 19, 19A ... patch antenna (antenna), 32 ... first pointer (42) ... second pointer (guidance), 52 ... pointer for longitude display, 62 ... pointer for latitude display (Guide), 87: Solar panel, 87A: Opening, 87B: Through hole, 92: Guide, 111: Cylindrical case (case), 131 to 135, 141 to 145: Stepping motor (motor), 136, 137, 146 , 147: wheel train, 95, 320, 420, 520, 620 ... pointer shaft.

Claims (5)

A case formed of a conductive member;
A dial formed of a non-conductive member,
The guidelines,
A motor disposed in the case and on the back side of the dial to drive the pointer;
A patch antenna arranged in the case and behind the dial to receive satellite signals;
A secondary battery for supplying power to the motor;
A circuit board on which a control unit for controlling the motor is mounted;
Have
The patch antenna is disposed at a position not overlapping with the motor in a plane, and is disposed at a position not overlapping in a plane with the secondary battery, and is stacked on an antenna substrate configured separately from the circuit substrate. An electronic watch characterized by In the electronic timepiece according to claim 1,
The electronic watch is characterized in that the secondary battery is disposed at a position overlapping with at least a part of the motor. In the electronic watch according to claim 1 or 2,
The electronic timepiece described above, wherein the circuit board has a notch through which a part of the secondary battery in the height direction is inserted. The electronic timepiece according to any one of claims 1 to 3.
The signal line of the antenna substrate is soldered to the circuit substrate. The electronic timepiece according to any one of claims 1 to 4,
The electronic watch according to claim 1, wherein the circuit board includes a receiver configured to process a satellite signal received by the patch antenna.

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